Home / TSD Surface Drive / TSD Surface Drive / BH450

BH450
BH550
BH600
BH660
BH750
BH850
BH1000
BG550
BG600
BG660
BG750
BG850
Integrated Semi-Submerged Propulsion System
TSD STERN DRIVE

Design Advantage

BH Series Surface Drive — Engineering Specifications

Surface-piercing propeller operates at the air-water interface with 35–45% immersion ratio at design speed, eliminating submerged appendage drag and blade cavitation
Dual hydraulic cylinder trim system allows real-time adjustment of propeller height and angle while underway, optimising thrust vector as vessel speed and load conditions change
Universal ball-cage (CV joint) driveshaft connection eliminates misalignment stress on the engine output flange, extending drivetrain service life
Propeller blades and shaft: Duplex stainless steel (2205 grade, PREN ≥35), yield strength ≥450 MPa — verified corrosion resistance in high-salinity tropical seawater environments
Drive housing: Marine-grade 316L austenitic stainless steel throughout — no painted surfaces on underwater components
Aluminium-indium alloy sacrificial anodes on lower drive unit for galvanic corrosion protection
Compatible with inboard diesel engines, gasoline engines, and hybrid electric powertrains

Product Paramater

Specification	BH450
Propeller Diameter	400 / 450
mmEngine Power Range	80 – 130HP
Installation Angle	10–13° (BH Series)
Suitable Vessel Weight	1.5 – 2.5T (single unit/dual units)
Drive Housing Material	316L Marine-Grade Stainless Steel
Propeller Blade Material	Duplex Stainless Steel (2205 grade)
Overall Dimensions	980 × 620 × 450mm
Unit Weight	68 KG
Standard Accessories	Universal drive shaft / Oil pot / Oil shortage warning light / Anti-corrosion zinc block
Certification	ABS · CCS · ISO 9001:2015/2016
Warranty	18 months

Performance Advantages

Verified Performance Advantages vs. Conventional Submerged Propellers

Speed advantage: 15–28% higher top speed at equivalent engine power, achieved by eliminating shaft, strut, and bracket drag from the underwater configuration
Fuel efficiency: 15–30% reduction in fuel consumption at equivalent vessel speed due to reduced hydrodynamic resistance
Cavitation elimination: Propeller operates in the air-water boundary zone, preventing the destructive cavitation bubble formation that erodes blade surfaces and reduces thrust above 30 knots
Noise reduction: Reduced underwater vibration and blade noise transmission compared to fully submerged propeller configurations
Low maintenance: Principal wear items limited to oil seals (replace every 1,000 hours) and sacrificial anodes (inspect every 200 hours) — no submerged gear case exposed to continuous seawater immersion
Shallow draft: Minimum underwater appendage depth of 150–200mm at planing speed enables operation in shallow coastal and river environments

TSD BH Surface Drive System Specification Chart

TSD Surface Drive Certification

TSD surface drive systems are manufactured under ISO 9001:2015/2016 quality management certification and carry dual classification society approval:
ABS (American Bureau of Shipping) — Certificate covers design, development, and manufacture of movable surface drives, fixed surface drives, and marine gearboxes
CCS (China Classification Society) — Recognised in naval, coast guard, and commercial vessel procurement specifications worldwide
Scope of certification: Marine accessory products including movable semi-immersed surface drives, fixed semi-immersed surface drives, and marine gearboxes.

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Plan Communication

TSD Surface Drive specializes in high-durability surface-piercing propellers and advanced marine surface drive systems specifically designed for high-speed vessels. Once the essential boat parameters are received from clients, TSD Surface Drive's expert engineers conduct comprehensive technical evaluations to assess feasibility and ensure precise fitment. Leveraging state-of-the-art analysis tools and methodologies, they meticulously match the most suitable surface drive systems, ensuring optimal performance, efficiency, and compatibility. Their commitment to innovation and quality guarantees that their products meet the highest industry standards, providing reliable and robust solutions for all high-speed marine applications.

TSD BG SURFACE DRIVE SYSTEM

Designing Process

Based on the specific specifications and requirements provided by our clients, TSD Surface Drive's engineers deliver comprehensive and customized solutions to meet customer needs. Our expert team meticulously designs and engineers complete systems, including engines, gearboxes, and surface drives, ensuring seamless integration and optimal performance. Each system can be tailored to match the precise requirements of individual projects, guaranteeing the best possible fit and functionality.

Furthermore, TSD Surface Drive is committed to supporting our clients throughout the entire planning and implementation process. We provide detailed 2D drawings, offering clear and precise visualizations of the proposed systems. This ensures that clients can fully understand the configurations and make informed decisions. Our dedication to quality and precision in every aspect of our production process underscores our commitment to delivering reliable and robust solutions for high-speed marine applications.

Production Processes

After assembling the TSD series surface drive propulsion devices, the company implements rigorous quality control protocols to ensure optimal performance and reliability. This process includes precision laser inspections, as well as static and dynamic balance assessments of the machined blades.
Furthermore, the assembled units undergo specific duration idle tests and dynamic load evaluations. To guarantee durability, the company conducts comprehensive load operation tests on both the device and blades within a specially constructed circulating pool. An essential component of our quality assurance process is the bench joint debugging test of the integrated hydraulic control system, which is critical in validating the reliability and overall quality of our products.

Packing and Transportation

Our TSD surface drive systems are securely packaged in export-grade wooden crates that comply with international shipping standards. We offer flexible transportation options, including sea, air, and land, tailored to your specific needs. If you have any special requirements, please contact us in advance to ensure we can accommodate your request.

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Get In Touch

18th Floor, Tower A, Yuexiang Center, No.8 Songyue Road, Siming District, Xiamen, Fujian

+86-15821908183

+86-0592-5070-133

+86-13950000057

References

GB/T19001-2016/IS09001:2015.

This certificate is valid to the following scope for QMS: ^DESIGN, DEVELOPMENT AND MANUFACTURE OF MARINE ACCESSORY PRODUCTS (MOVABLE SEMIIMMERSED OAR, FIXED SEMI-IMMERSION OAR, GEAR BOX)*.

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